EAL, Institut für elektrische Antriebe und Leistungselektronik

Institut für elektrische Antriebe und Leistungselektronik

JKU, Johannes Kepler Universität Linz

Sprache: DE

Publikations Einzelansicht

A 2D-Based Analytical Method for Calculating Permanent Magnetic Ring Bearings with Arbitrary Magnetization and its Application to Optimal Bearing Design


Autor(en): Edmund Marth, Gerald Jungmayr und Wolfgang Amrhein
Journal: IEEE Transactions on Magnetics
Jahr: 2013
Band: VOL. 50, NO. 5, MAY 2014 50
Ausgabe: 5
Reihe: ISSN 0018-9464 ISSN 0018-9464 ISSN: 0018-9464 ISSN: 0018-9464 ISSN: 00189464
Seite(n): 8
Verlag: IEEE Magnetics Society
Zusammenfassung: This paper investigates the optimal design of passive permanent magnetic bearings in terms of maximum stiffness per magnet volume ratio. Examining the inuence of design parameters on maximum material utilization, we present general conclusions regarding cross-section dimension, type of magnetization, and magnetic pole number. Further, we provide generalized design plots for selected congurations, which can be used for rapid dimensioning of bearings with adequate raw material utilization. The analytical computation method used for all calculations is based on the interaction energy of elementary magnetic dipoles and thus supports any kind of magnetization, including when strength and direction may vary within the cross-section of the magnetic rings. Although the design problem is three-dimensional and the analytical method two-dimensional, the resulting error is negligible for most practical applications.

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